Combined air nozzle and gauge



March 29 1927.

M. S. PLATT COMBINED AIR NOZZLE AND GAUGE Filed Sept.

IOR

ATTORNEY Patented Mar. 29, 1927.-

UNITED STATES MAITLAND STORM: PLATT, F TORONTO, ONTARIO, CANADA.

coMBfN-nn Am NozzLE AND GAUGE.'

Application filed September 3, 1926. Serial No. 133,421.

This invention relates to a combined air nozzle and gauge as describedin the present specification and illustrated in the accompanyingdrawings which form part of the same.

The invention consists essentially of the novel features pointed outbroadly and specificallyv in the claims for novelty following a descrition containing an explanation in detail of) an acceptable form of theinvention.

The objects of the invention are to combine an air nozzle with a gaugewhereby time and inconvenience may be saved when inflating tires; `toconstruct a combined air nozzle and gauge. durable and dependable ofconstruction, and easy and simple of operation: to suppl)v suchy adevice, the design of which will readily adapt it to different sizes ofstandard pressure indicating gauges of the Schrader type; and generally,to manufacture a useful and economical device, capable of accomplishingthe aforesaid purposes.

In the drawings, Figure 1 is a side elevation view of the devicecomplete;

Figure 2 is a sectional side view of the device showing the position ofits working parts when the tire is being inflated, parts being shown inelevation;

Figure 3 is a sectional side view of the device showing the position ofits working parts when the gauge is recording the air pressure in thetire, parts being shown in elevation;

Figure 4 is an end view of Figure 1;

Figure 5 is an end view of the valve closing the supply from the airtank;

Figure 6 is an end view of the piston showing the bridge which opensvalve 26.

Like numerals of reference indicate corresponding parts in the variousfigures.

Referring to the drawings, 1 0 is a sleeve or tube havingthe plugs 11and 12 threaded into the ends thereof; the plug 12 has a cen` tralcavity 13 tapped to receive the threaded end 14 of the nozzle 15.

16 is a piston sliding in the sleeve 10 and having the reduced frontportion 17 slidin in a central hole in the plug 11; the reduced portion17 is threaded at 18A' to receive the tapped boss 18 of a suitable airchuck 19 such, for instance. as the chuck sold on the marketas theSchrader air chuck.

The piston 16 is free to move within the sleeve 10 between twodetermined positions;

one position being assumed when the large end of the piston bearsagainst the washer 2O which is suitably secured to or retained against'the inner face of thevplug 12, and the other position being assumedwhen the shoulderformed by the reduced portion 17 of the piston bearsagainst the washer 21 secured to the inner face of-t-he plug 11.

The piston is provided with the central opening or passage 22 extendingtherethrough by means of which the air entering the nozzle 1 5 throughthe tube 25 is conveyed to the chuck 19 and finally into the tire tubewhich is being inflated.

26 is a valve sliding in the plug 12; the valve is closed when forceddown upon the washer 12A in the plug 12 by the action of the airpressure in the nozzle 15 which communicates with the air supply throughthe tube 2 5; when the chuck 19 and therefore the piston 16 are forcedin, the bridge 23 across the opening 22 of the piston engages the end ofthe shank 27 of the valve 26 and opens same to admit the air into saidopening. The shank 27 is here shown as being of triangularcross-sectionv to allow a clearance between the plug and the shank andadmit the air into said opening 22.

29 is a cover or casing having the end wall 30 perforated to admit thethreaded end 14 of the air nozzle 15, said end wall abutting against theedge of the sleeve 10 and therefore being retained between said sleeveand the nozzle 15.

The cover.2 is formed substantially as shown, having the upper portion30 formed to enclose the cylindrical pressure indicating gauge 31; thecover is open as at 32 to allow the gauge to function. The gauge used in.this invention is one known as Schraders, having the usual inlet 33communicating with the inside of the sleeve 10 through ak suitablepassage in the neck 34 formed in said sleeve. The cover is formed withthe projection 35 adapted to be engaged by the usual dome 40 in theSchrader gauge,

therefore releasably locking the auge in its f m l neaaeei As will beclearly seen'in Figures 2 and 3, the gauge opens into the sleeve whenthe piston 16 is in the position shown in Figure 3, whereas the piston16 when in the position shown in Figure 2, closes off all communicationbetween the gauge and the inside of the sleeve. Therefore, when thepiston 16 is in the position shown in Figure 2, the valve 26 is open,allowing the air to low from the supply through the valve, into thepassage 22, into the chuck 19 and into the valve stem of the tire whichis being inflated the passage into the air gauge being closed off; whenthe piston is in the position shown in Figure 3, the valve 26 is closedby the air pressure from the air supply, while the gauge is now indirect communication with the inside of the vsleeve through the passagein the neck 34 and therefore in direct communication with the air chuckand the tire, the gauge now operating to indicate the an' pressure inthe tire.

It will be noted that as the piston is rotatable in the sleeve, .the airchuck can be applied upon the tire valve for any position of the wheel,without having to change the position ofthe hand holding the device.

Operation: The device4 is gripped in one hand with the thumb restingupon the rest 37 and the chuck applied to or upon the tire valve stem inthe usual way, the-device being then pushed towards the tire so as toVforce the piston 16 into the sleeve 10, that is, the piston now beingin the 'position shown in Figure 2. As the piston is forced into thesleeve 10, the sleeve moves therewith,

the shoulder 36 engaging the portion 37 of the gauge and forcing thesaine intothe barrel, or in -other words, to the zero mark. The valve 26is now open by the engagement of the end of its shank with the bridge23, the air therefore flowing through the valve, the passage 22, throughthe vchuck 19 and into the tire.

When it is desired to ascertain the pressure in the tire, the device isallowed to automatically move back under the action of Y the backpressure from the tire tube by releasing the forward push thereon whileretaining the chuck in position upon the stem, the piston 16 therefore.sliding outwardly in the sleeve 10, the valve 26 closing under thepressure from the air supply, the passage into the neck 34 and the gauge31 opening, and the gauge" recording the pressure .in the tire. all'asclearly'v shown in Figure 3.

If the pressure in the tire is not that required, the device is againpushed towards the tire until the piston 16 and the graduated portion 37yof the gauge 31 are in the position shown in Figure 2.

What I claim is:

1. A device of the kind described comprising a sleeve having an airinlet and an opening in the Wall thereof, an air pressure indi scopedwithin. said sleeve, and an air'chuck carried by said piston.

2. A device of the kind described comprising a sleeve having an airinlet and an opening in the wall thereof, an air pressure indicatinggauge mounted adjacent 'said sleeve and'communicating with said o ening,a

valve closing said inlet, a. hollowv piston slidable in said sleeve,means adapted for limiting the inward and outwardy sliding-motion of,said piston, said piston being adapted to clear said opening .when inVitsoutermost position within said sleeve, and an air chuck I carried'bysaid piston.

3. A device of the kind described comprising a sleeve having an airinlet and an opel-- ing in the wall thereof, an air pressure indicatinggauge mounted adjacent said sleeve and operatively connected with saidopening, a valve closing said inlet and having astem projecting intosaid sleeve, a hollow piston slidable in said sleeve and having a bridgemember' adjacent one end engaging said valve 'stem when said piston istelescoped withinsaid sleeve, and an air chuck carried by said iston. lA

4. A evice of4 the kind described comprising a sleeve having an airinlet and an opening in the wall thereof, -an air pressure indicatinggauge ad'acent said sleeve and communicating wit said openin a casingmounted upon said. sleeve an formed to hold said gauge, a valve closinsaid inlet, a hollow piston slidable in saids eeve adapted to open saidvalve and close said opening when telescoped Within said sleeve, and anair chuck carried by said piston.

5. A device of the kind described comprising a sleeve having an airinlet nozzle and an opening in the ywall thereof, a valve in said sleeveadjacent said nozzle adapted tov close when air is admitted through saidnozzle, an air pressure indicatin gauge adjacent said sleeve andcommunlcating with saidopening, a piston slidable in said sleeve andhaving al continuous central passage therethrough and adapted to closesaid opening when telescoped within lsaid sleeve, means carried by saidpiston adapted for opening said valve when said piston is telescopedwithin said sleeve; and an air chuck carried by said piston.

6. A device of the kind described comprising a sleeve having an airinlet and an opening in the Wall thereof, an air pressure indif eatinggauge adjacent said sleeve and communicating with said openin a valveclosin said inlet, means for hol ing said gauge adggaeently of saidsleeve, a hollow piston slidable within said sleeve adapted for closingsaid opening and opening said valve when in its innermost positionwithin said sleeve, means for limiting the sliding motion of saidpiston, an aix' chuck carried by said piston, and means movable withsaid piston engaging the gauge piston when said first-mentioned pistonis moved withinsaid sleeve to open said valve.

7. A device of the kind described comprising a sleeve having an openingin the wall thereof anda plug forming an air inlet, an air pressureindicating gauge adjacent said sleeve and communicating with said opening. means for holding said gauge adjacently of said sleeve, an inletnozzle carried by said plug. a valve slidable in said plug and adaptedto close said air inlet when air is admitted into said nozzle, a pistonslidable within said sleeve and having a central continuous passagetherethrough and being adapted to close said opening and, open saidvalve when abutting said plug, means adapted for limiting the outwardmotion of said piston,'and an air chuck operatively connected to saidpiston.

8. A'device of the kind described comprising a sleeve having an airinlet and an opening in the side wall thereof, an inlet;v nozzlecommunicating with said airkinlet, a valve adapted to close said inletwhen air is admitted into said nozzle,` a piston slidable within saidsleeve and having a continuous air passage therethrough in the axisthereof, means for limiting the outermost and innermost positions ofsaid piston, said piston heilig adapted to alternately close saidopening and open said valve when moved inwardly within said sleeve andto clear said opening and disengage said valve when moved outwardlyvwithin said sleeve, an air chuck operatively connected to the outer endof said piston, and means movable with said piston engaging the gaugepiston when said first-mentioned piston is moved within said sleeve toopen said valve.

9. -A device of the kind described comprising a sleeve of circularcross-section having an air inlet andv an opening in the wall thereof,an air pressure indicating gauge mounted adjacent said sleeve 'andoperatively connecting with said opening, a valve closing said inlet, atubular pistonslidable and rotatable in said sleeve adapted to closesaid opening and opensaid valve when telcscoped within said sleeve, landan air chuck operatively connected to said piston.

Signed at the city of Toronto, this 27th day of August, 1926.

MAITLAND STORM PLATT.

